When is the Virgin Mary' s birthday?

Answer 1

Her major Feast day is August 15th, called the "Assumption" in Roman Catholicism; the "Dormition" in Eastern Orthodoxy; and simply "the Feast of St. Mary the Virgin" in Anglicanism.

That's the main one. She also has several others, some are as follows:

The Purification of Mary (February 2)

Annunciation (March 25)

Visitation (May 31)

Nativity of Mary (September 8)

Immaculate Conception (December 8)

Our Lady of Guadalupe (December 12)

There are several feasts of the Blessed Virgin Mary. The principle feast throughout the church is the Assumption which falls on August 15 and comemorates her Assumption into heaven. Another very important feast day, especially for the United States is the Immaculate Conception which falls on December 8 and is the day on which Mary was conceived by her mother, Ann. Both of these days are solemnities (the highest rank for a feast in the church) and are holy days of Obligation (a Catholic must attend Mass and rest from servile labor as on a Sunday).

Roman Catholic Answerfrom the New Advent copy of the Catholic Encyclopedia:

After the Congress of Vienna and the battle of Waterloo Pope Pius VII returned to Rome, 7 July, 1815. To give thanks to God and Our Lady he (15 Sept., 1815) instituted for the Papal States the feast of Our Lady, Help of Christians, to be celebrated, 24 May, the anniversary of his first return. The Dioceses of Tuscany adopted it, 12 Feb., 1816; it has spread nearly over the entire Latin Church, but is not contained in the universal calendar. The hymns of the Office were composed by Brandimarte (Chevalier, "Repert. Hymnolog.", II, 495). This feast is the patronal feast of Australasia, a double of the first class with an octave (Ordo Australasiae, 1888), and in accordance with a vow (1891) is celebrated with great splendour in the churches of the Fathers of the Foreign Missions of Paris. It has attained special celebrity since St. Don Bosco, founder of the Salesian Congregation, 9 June, 868, dedicated to Our Lady, Help of Christians, the mother church of his congregation at Turin. The Salesian Fathers have carried the devotion to their numerous establishments.

Answer 2

The date of birth of the Virgin Mary is unknown but is celebrated on September 8 each year.

Answer 3

The date of her real birthday is not known. It is celebrated on September 8.

Answer 4

For a complete list of all the feast days of Mary, see the link below.

Answer 5

The Feast of the Nativity of the Blessed Virgin is celebrated on September 8.

Answer 6

We do not know the date but Mary was probably born about the year 15 BC.

Answer 7

September 8